import './style/index.css'
require('./style/index.less')
function add(a,b) {
  return a + b
}
console.log(add(1,2))
let sum = (a,b) => {
  return a + b
}
console.log(sum(4,5))
let h3 = document.createElement('h3')
h3.innerText = '你好'
document.body.appendChild(h3)